Airflow distribution device for mine water direct filtration system

Abstract

The utility model discloses an air flow distribution device for a mine water direct filtration system, which comprises a Roots blower, an air flow distribution device and an air flow distribution device, the number of the first pneumatic valves is at least two, and the first pneumatic valves are communicated with the output end of the Roots blower; the number of the three-way pneumatic valves is at least two, independent inlets of the three-way pneumatic valves are communicated with the first pneumatic valves in a one-to-one correspondence mode, and each three-way pneumatic valve is provided with two outlets; the ultrafiltration devices are communicated with outlets of the three-way pneumatic valves in a one-to-one correspondence manner. Compared with a traditional scheme, the scheme has the advantages of saving energy, improving the cleaning efficiency, providing a general control function and reducing the pollution blocking risk.

Description

Technical Field

[0001] The utility model relates to an airflow distribution device, in particular to an airflow distribution device used in a mine water direct filtration system. Background Art

[0002] Ultrafiltration (UF) devices are based on a pressurized membrane separation technology, that is, under a certain pressure, small molecular solutes and solvents pass through a special membrane with a certain pore size, while large molecular solutes cannot pass through and remain on one side of the membrane, thereby partially purifying the large molecular substances. During the operation of the ultrafiltration device, pollutants will accumulate on the membrane surface. In order to delay the fouling of the membrane, the membrane needs to be regularly scrubbed with compressed air.

[0003] The compressed air of the traditional solution is provided by a Roots blower, and the connected air intake valve and ultrafiltration device are connected in a one-to-one manner for air scrubbing. During operation, the Roots blower sequentially rotates the air supply to each ultrafiltration device through the automatic air intake valve. The disadvantage of this sequential rotation air supply method is that the cleaning time is long, resulting in high energy consumption of the Roots blower. Utility Model Content

[0004] In order to solve the deficiencies existing in the above-mentioned technology, the utility model provides an air flow distribution device for a mine water direct filtration system.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is an air flow distribution device for a mine water direct filtration system, comprising:

[0006] Roots blower outputs the inlet air flow through the output end;

[0007] There are at least two first pneumatic valves, both connected to the output end of the Roots blower;

[0008] There are at least two three-way pneumatic valves, and their independent inlets are connected to the first pneumatic valve in a one-to-one correspondence, and each three-way pneumatic valve has two outlets;

[0009] The ultrafiltration devices are multiple and are connected one by one to the outlets of the three-way pneumatic valve.

[0010] Furthermore, the Roots blower is connected to a plurality of first pneumatic valves through a first input pipeline.

[0011] Furthermore, a second pneumatic valve is provided on the first input pipeline, and the second pneumatic valve is located at the front end of all the first pneumatic valves.

[0012] Furthermore, there are four first pneumatic valves, and each first pneumatic valve is connected to a corresponding three-way pneumatic valve through the second input pipeline.

[0013] Furthermore, the three-way pneumatic valve is connected to two corresponding ultrafiltration devices through two third input pipelines.

[0014] Furthermore, the opening adjustment of the three-way pneumatic valve is switched alternately at the two outlets.

[0015] The utility model discloses an air flow distribution device for a mine water direct filtration system. Through the air flow distribution device, the valve opening of a three-way pneumatic door is adjusted to make the air intake of the ultrafiltration device change back and forth between 0~Q and Q~0, thereby reducing the energy consumption of the Roots blower and saving energy. Through the valve opening adjustment of the three-way pneumatic valve, sequential cleaning of the ultrafiltration device is achieved. The duration of each step is nt, and the time of a scrubbing cycle is nt. Compared with the 2nt in the traditional method, the cleaning efficiency is improved. The second pneumatic valve is located at the front end of the first pneumatic valve, so that the overall control of the rear end is achieved, which facilitates the adjustment and management of the system. Due to the use of the air flow distribution device, the intake air flow output by the Roots blower can be supplied to multiple ultrafiltration devices at the same time, avoiding the accumulation of dirt on the membrane surface caused by the long-term operation of a single ultrafiltration device, and reducing the risk of fouling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] In the figure: 100, Roots blower; 200, first pneumatic valve; 300, three-way pneumatic valve; 400, ultrafiltration device; 500, first input pipeline; 600, second pneumatic valve; 700, second input pipeline; 800, third input pipeline. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] like Figure 1The air flow distribution device for the mine water direct filtration system shown in the figure comprises a Roots blower 100, a first pneumatic valve 200, a three-way pneumatic valve 300 and an ultrafiltration device 400 in this embodiment. The Roots blower 100 outputs an inlet air flow through an output end; there are four first pneumatic valves 200 and they are all connected to the output end of the Roots blower 100 through a first input pipeline 500; there are four three-way pneumatic valves 300 and their independent inlets are connected to the first pneumatic valves 200 one by one, and each first pneumatic valve 200 has a first inlet and a second inlet. 0 is connected to an interface A inlet of a three-way pneumatic valve 300 through the second input pipeline 700, and each three-way pneumatic valve 300 has two outlets, namely, interface B and interface C; there are eight ultrafiltration devices 400 (1#-8#) and they are connected to the outlets of the three-way pneumatic valve 300 one by one. The three-way pneumatic valve 300 is connected to two ultrafiltration devices 400 through two third input pipelines 800, and the opening adjustment of the valve (actuator) of the three-way pneumatic valve 300 is switched alternately at the two outlets.

[0020] A second pneumatic valve 600 is provided on the first input pipeline. The second pneumatic valve 600 is located at the front end of all the first pneumatic valves 200 to achieve overall control of the rear end.

[0021] The first air inlet valve and the second pneumatic valve can be a combination of a pneumatic butterfly valve and an electric regulating valve, but are not limited to the above methods.

[0022] The compressed air supply route is: Roots blower → first air inlet valve → three-way pneumatic valve → ultrafiltration device. During operation, the Roots blower supplies air to each ultrafiltration device in sequence through the first air inlet valve and the three-way pneumatic valve. The steps are as follows, see Table 1 Operation Steps:

[0023] Table 1 Operation steps table

[0024]

[0025]

[0026] Note: ①In the table, “√” means the valve is open, and “X” means the valve is closed.

[0027] ②The duration of each step is t

[0028] The duration of each step is t, the power of the Roots blower is N, then the time of a scrubbing cycle is nt, and the power consumption of the Roots blower is: ntN.

[0029] In the above operation process, the traditional method of sequentially rotating air supply to each ultrafiltration device through an automatic air intake valve is replaced. In the traditional method, the duration of each step is t, the power of the Roots blower is N, then the time of a scrubbing cycle is 2nt, and the power consumption of the Roots blower is: 2ntN.

[0030] It can be seen that the scrubbing cycle time is saved by 1 times through the design of this patent, and the power consumption of the Roots blower is saved by 1 times. Compared with the Roots blower, the blower can be stopped in the same time (the time is one scrubbing cycle). The implementation method is to adjust the opening of the three-way pneumatic valve so that the air intake of the ultrafiltration device on the same three-way pneumatic valve changes back and forth between 0~Q and Q~0. See Table 2 for the air supply change table:

[0031] Table 2 Gas supply volume change table

[0032]

[0033] Note: Q is the air supply of the Roots blower

[0034] The operation mode is as follows (the air supply of the Roots blower is Q): when two ultrafiltration devices need air supply, the first air inlet valve and the three-way pneumatic valve are opened, and the air intake volume of the ultrafiltration devices connected to the B interface and the C interface is cyclically changed between 0~Q and Q~0 by adjusting the opening of the three-way pneumatic valve. When a stop command is received, the air inlet valve / regulating valve stops.

[0035] In summary, compared with the conventional method, the energy consumption of the Roots blower can be reduced by: (2ntN-ntN) / 2ntN=50%.

[0036] The benefits of this solution are summarized as follows: In the traditional solution, each ultrafiltration device is ventilated sequentially through an automatic air intake valve, and the cleaning time is long, resulting in high energy consumption of the Roots blower. In this solution, the air flow distribution device is used to adjust the valve opening of the three-way pneumatic door so that the air intake volume of the ultrafiltration device changes back and forth between 0~Q and Q~0, reducing the energy consumption of the Roots blower and saving energy. The valve opening of the three-way pneumatic valve is adjusted to achieve sequential cleaning of the ultrafiltration device. The duration of each step is nt, and the time of a scrubbing cycle is nt. Compared with the 2nt in the traditional method, the cleaning efficiency is improved. The second pneumatic valve is located at the front end of the first pneumatic valve, which realizes the overall control of the rear end, facilitating the adjustment and management of the entire system. Due to the use of the air flow distribution device, the air intake output by the Roots blower can supply multiple ultrafiltration devices at the same time, avoiding the accumulation of dirt on the membrane surface caused by the long-term operation of a single ultrafiltration device, and reducing the risk of fouling.

[0037] The above implementation modes are not limitations of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by technicians in this technical field within the technical solution of the present invention also belong to the protection scope of the present invention.

Claims

1. An air flow distribution device for a mine water direct filtration system, characterized in that: include: A Roots blower (100) outputs an inlet air flow through an output end; There are at least two first pneumatic valves (200) and both are connected to the output end of the Roots blower (100); A three-way pneumatic valve (300), having at least two independent inlets connected to the first pneumatic valve (200) in a one-to-one correspondence, and each three-way pneumatic valve (300) has two outlets; The ultrafiltration devices (400) are in multiple and one-to-one correspondence with each other and are connected to the outlet of the three-way pneumatic valve (300).

2. The air flow distribution device for a mine water direct filtration system according to claim 1, characterized in that: The Roots blower (100) is connected to the plurality of the first pneumatic valves (200) via a first input pipeline (500).

3. The air flow distribution device for a mine water direct filtration system according to claim 2, characterized in that: The first input pipeline (500) is provided with a second pneumatic valve (600), and the second pneumatic valve (600) is located at the front end of all the first pneumatic valves (200).

4. The air flow distribution device for a mine water direct filtration system according to claim 3, characterized in that: There are four first pneumatic valves (200), and each first pneumatic valve (200) is connected to a corresponding three-way pneumatic valve (300) via a second input pipeline (700).

5. The air flow distribution device for a mine water direct filtration system according to claim 4, characterized in that: The three-way pneumatic valve (300) is connected to two corresponding ultrafiltration devices (400) via two third input pipelines (800).

6. The air flow distribution device for a mine water direct filtration system according to claim 5, characterized in that: The valve opening adjustment of the three-way pneumatic valve (300) is switched alternately at the two outlets.

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